Credit: Unsplash/CC0 Public Domain An unprecedentedly violent volcanic eruption that triggered a tsunami off the Pacific island nation of Tonga in 2022 unleashed the fastest underwater currents ever recorded, according…

Dr. Bai Zhixuan and his colleagues launched a balloon in Golmud, Qinghai province on March 2021, as part of the SWOP campaign. Credit: Chen Zhixiong An international team led by…